It is not _completely_ naive to believe that in order for a service like Facebook to continue being successful, they must do _something_ that makes their users

It is not _completely_ naive to believe that in order for a service like Facebook to continue being successful, they must do _something_ that makes their users want to use it. And therefore, it is not completely illogical to think that Meta’s interests and users’ interests must align. (Not my opinion, just responding to your question)